The Slayer helmet (i) is a piece of equipment that is worn in the helmet slot. It provides the bonuses of multiple pieces of protective and beneficial Slayer equipment. It functions in the same manner as its unimbued variant (with the 16.67% Melee bonus), except that it provides an extra 15% boost to Ranged accuracy and Ranged damage, and a 15% boost to Magic accuracy and Magic damage.

Players can imbue the slayer helmet using 1,250,000 Nightmare Zone reward points. This can be done to a black mask before assembling the Slayer helmet or to the Slayer helmet itself.

Upon death, the slayer helmet will now remain equipped to the player or stay in the inventory, as with other untradeable items. Previously, all components of the helmet would disappear and the black mask would appear on the ground.

'''Note:''' This only applies for player versus monsters.

The defensive bonuses of the Slayer helmet (i) are equivalent to those of the Rune full helm, with the exception of providing +10 magic defence as well as positive Magic and Ranged attack bonuses.